This can be used with metal or MDF, it has been extended slightly to fit a stereo. If you plan on fitting one to the top of the glovebox the design includes measurements for a lid (you will have to cut a hole in the back of the box).

I put mine together with screws (I do not recommend), you will be better to use liquid nails.
make sure you cut out stereo hole in the back before attaching



Hope this helps
Cheers
Jay